CN213624654U - Single-motor flat car sewing machine - Google Patents
Single-motor flat car sewing machine Download PDFInfo
- Publication number
- CN213624654U CN213624654U CN202022600102.0U CN202022600102U CN213624654U CN 213624654 U CN213624654 U CN 213624654U CN 202022600102 U CN202022600102 U CN 202022600102U CN 213624654 U CN213624654 U CN 213624654U
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- motor
- connecting rod
- driving
- crank
- presser foot
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- 238000009958 sewing Methods 0.000 title claims abstract description 49
- 238000009966 trimming Methods 0.000 claims abstract description 55
- 238000000926 separation method Methods 0.000 claims description 14
- 230000007246 mechanism Effects 0.000 description 11
- 239000004744 fabric Substances 0.000 description 4
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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Abstract
The utility model belongs to the technical field of sewing machines, and relates to a single-motor flat car sewing machine, which comprises a machine head, a base, a thread trimming component, a presser foot lifting component and a forward stitching backstitch stitch pitch adjusting component, wherein a double-end motor is arranged in the base, a driving disc is sleeved on an output shaft at one side of the double-end motor, a first ball for driving the thread trimming component is arranged on the driving disc, the driving disc is connected with a driving connecting rod through a clutch device in a clutching way, and the driving connecting rod is connected with the forward stitching backstitch stitch pitch adjusting component; a pressure foot lifting crank for driving the pressure foot lifting assembly is sleeved on an output shaft on the other side of the double-end motor; and when the output shaft of the double-head motor rotates at different angles, the output shaft respectively drives the thread trimming assembly, the presser foot lifting assembly and the forward sewing backstitch stitch length adjusting assembly to act. The utility model provides a single motor flatcar sewing machine, by four actions of a motor drive, reduced part structure, alleviateed the machine noise, improved the working efficiency, practiced thrift the cost.
Description
Technical Field
The utility model belongs to the technical field of sewing machine, a single motor flatcar sewing machine is related to.
Background
The traditional stitch length adjusting mode of the flat sewing machine mostly uses a stepping motor. When the sewing machine is used for sewing, the stepping motor rotates anticlockwise for a certain angle, the crank at the end of the motor shaft drives the needle pitch adjusting connecting rod to move upwards for a certain distance, so that the needle pitch adjusting crank connected to the other end of the needle pitch adjusting connecting rod swings anticlockwise for a certain amplitude, the moving direction of the cloth feeding mechanism is the same as the moving direction of the main shaft, the forward feeding is adopted as the feeding, the maximum motion amount of the cloth feeding mechanism is the maximum needle pitch required by sewing, and the change of the needle pitch during the sewing can be realized by changing the anticlockwise rotating angle of the stepping motor; during backstitch, the stepping motor rotates clockwise by a certain angle, the crank at the end of the motor shaft drives the needle pitch adjusting connecting rod to move downwards by a certain distance, so that the needle pitch adjusting crank connected to the other end of the needle pitch adjusting connecting rod swings clockwise by a certain amplitude, the movement direction of the cloth feeding mechanism is opposite to that of the main shaft, reverse feeding is adopted for feeding, the maximum movement amount of the cloth feeding mechanism is the maximum needle pitch required by sewing, and the change of the needle pitch during backstitch can be realized by changing the clockwise rotation angle of the stepping motor. The thread cutting mechanism and the presser foot lifting mechanism mostly use electromagnets. And the thread trimming mechanism and the presser foot lifting mechanism are two mutually independent mechanisms which are respectively driven by two electromagnets.
Therefore, three independent mechanisms are required for realizing the functions of adjusting the stitch length of the front stitching and the back stitching, lifting the presser foot and trimming the thread. In order to solve the technical problem that the mechanism is too bulky, a multifunctional machine type with a single motor is available on the market at present, but in actual use, the tooth frame moves simultaneously when the thread is cut and the presser foot is lifted.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to prior art's not enough, provide a single motor flatcar sewing machine, its simple structure has reduced the part assembly, and the tooth frame is motionless when the presser foot is lifted to the trimming simultaneously, guarantees that the clothes stitch is even unchangeable.
In order to solve the above technical problem, the purpose of the present invention can be achieved by the following technical solutions:
a single-motor flat car sewing machine comprises a machine head, a base, a thread trimming component, a presser foot lifting component and a forward-stitching and backstitch stitch length adjusting component, wherein a double-head motor is arranged in the base, a driving disc is sleeved on an output shaft on one side of the double-head motor, a first ball for driving the thread trimming component is arranged on the driving disc, the driving disc is in clutch connection with a driving connecting rod through a clutch device, and the driving connecting rod is connected with the forward-stitching and backstitch stitch length adjusting component; a pressure foot lifting crank for driving the pressure foot lifting assembly is sleeved on an output shaft on the other side of the double-end motor; and when the output shaft of the double-head motor rotates at different angles, the output shaft respectively drives the thread trimming assembly, the presser foot lifting assembly and the forward sewing backstitch stitch length adjusting assembly to act.
In the single-motor flat car sewing machine, the middle part of the driving connecting rod is hinged to the first swinging crank, the first swinging crank is driven to rotate when the driving connecting rod is connected with the driving disc, the second ball is arranged on one side of the hinged point of the driving connecting rod, the other side of the hinged point is connected with the clutch device, and the driving disc is provided with the arc-shaped opening matched with the second ball.
In foretell single motor flatcar sewing machine, clutch includes the electro-magnet, the case of electro-magnet is articulated with the one end that promotes the connecting rod, and the other end that promotes the connecting rod is articulated with the one end of separation support, the middle part of separation support is articulated fixed, and the downside of the other end is connected with the one end contact of drive connecting rod, the other end of drive connecting rod is connected with the extension spring that resets, extension spring one end that resets is connected with the mounting hole on the drive connecting rod, and the other end is fixed on the motor mounting panel.
In foretell single motor flatcar sewing machine, double-end motor passes through the motor mounting panel to be fixed on the base, electro-magnet axial parallel arrangement is in one side of double-end motor, the separation support articulates on the motor mounting panel.
In the single-motor flat car sewing machine, the first swing crank is connected with one end of the swing shaft, the other end of the swing shaft drives the swing assembly to move through the second swing crank, and the swing assembly respectively drives the stitch length adjustment of the forward sewing and the backstitch when swinging towards different directions.
In foretell single motor flatcar sewing machine, ball one corresponds with trimming swing crank's side, and output shaft ball one drive trimming swing crank rotates when trimming angle rotates, and ball one drive trimming swing crank is connected with trimming swing crank's the side contact that goes up when being connected, trimming swing crank cover is established in the one end of trimming actuating lever, and the other end of trimming actuating lever passes through trimming crank drive and moves the knife tackle spare.
In the single-motor flatcar sewing machine, the presser foot lifting crank is correspondingly provided with the pressing plate, the pressing plate is rotatably arranged on the base through the fixed pin, a hinge joint of the pressing plate and the fixed pin and a driving point of the presser foot lifting crank are respectively positioned at two ends of the pressing plate, the output shaft lifts the presser foot crank to drive the pressing plate to rotate when the presser foot lifting angle rotates, the pressing plate corresponds to the lower end of the presser foot ejector rod, the upper end of the presser foot ejector rod is connected with one end of the presser foot connecting rod, the other end of the presser foot connecting rod is connected with one end of the pull rod, and the other end of.
In the single-motor flat car sewing machine, the pressure lifting and pressing pin crank is provided with the third ball, and the third ball is in contact connection with the lower side surface of the pressure plate when the pressure lifting and pressing pin crank drives the pressure plate.
In the single-motor flat car sewing machine, the double-end motor is a closed-loop motor, and an encoder is fixed on the motor mounting plate.
Compared with the prior art, the utility model, following beneficial effect has:
1. the utility model discloses a needle pitch of a motor drive forward sewing backstitch is adjusted, the trimming and is lifted four actions of presser foot to reduce part structure, alleviateed the machine noise, improved the working efficiency, practiced thrift the cost.
2. The utility model discloses an each drive assembly uses the separation and reunion structure simultaneously in the epaxial circumference overall arrangement of double-end motor output for the output shaft corresponds four actions respectively when four angle intervals rotate, and four actions mutual independence, and flatcar sewing machine all can not touch other actions when carrying out any one action.
Drawings
Fig. 1 is a perspective view of the present invention;
fig. 2 is a perspective view of the present invention from another angle;
FIG. 3 is a perspective view of a part of the structure of the present invention;
reference numerals: 1. a double-headed motor; 2. a drive disc; 3. a first ball; 4. a drive link; 5. lifting a presser foot crank; 6. a first swinging crank; 7. a second ball bearing; 8. an electromagnet; 9. a lifting link; 10. separating the bracket; 11. a return tension spring; 12. a motor mounting plate; 13. a swing shaft; 14. a second swinging crank; 15. a trimming swing crank; 16. a trimming drive rod; 17. a thread cutting crank; 18. pressing a plate; 19. a fixing pin; 20. a presser foot ejector rod; 21. a presser foot connecting rod; 22. a pull rod; 23. an encoder.
Detailed Description
The invention will be further described in the following with reference to specific embodiments thereof, with reference to the accompanying drawings, in which figures 1 to 3:
a single-motor flat car sewing machine comprises a machine head, a base, a thread trimming component, a presser foot lifting component and a forward stitching backstitch stitch pitch adjusting component, wherein a double-head motor 1 is arranged in the base, the double-head motor 1 is fixed on the base through a motor mounting plate 12, a driving disc 2 is sleeved on an output shaft at the side of the double-head motor 1, a ball I3 for driving the thread trimming component is arranged on the driving disc 2, the driving disc 2 is in clutch connection with a driving connecting rod 4 through a clutch device, and the driving connecting rod 4 is connected with the forward stitching backstitch stitch pitch adjusting component; a pressure foot lifting crank 5 for driving the pressure foot lifting assembly is sleeved on an output shaft on the other side of the double-end motor 1; when the output shaft of the double-head motor 1 rotates at different angles, the output shaft respectively drives the thread trimming assembly, the presser foot lifting assembly and the forward sewing backstitch stitch length adjusting assembly to act, and four actions are respectively triggered when the output shaft rotates for a circle through the circumferential arrangement of the driving assemblies on the output shaft of the double-head motor 1.
Referring to fig. 3, the connection structure of the driving plate 2 and the driving link 4 is: the middle part of the driving connecting rod 4 is hinged with the first swinging crank 6, the first swinging crank 6 is driven to rotate when the driving connecting rod 4 is connected with the driving disc 2, one side of a hinged point of the driving connecting rod 4 is provided with a second ball 7, the other side of the hinged point is connected with the clutch device, and the driving disc 2 is provided with an arc-shaped opening matched with the second ball 7;
clutch includes electro-magnet 8, electro-magnet 8's case is articulated with the one end that promotes connecting rod 9, and the other end that promotes connecting rod 9 is articulated with the one end of separation support 10, the middle part of separation support 10 is articulated fixed, and the downside of the other end is connected with the one end contact of drive connecting rod 4, the other end of drive connecting rod 4 is connected with extension spring 11 that resets, extension spring 11 one end that resets is connected with the mounting hole on the drive connecting rod 4, and the other end is fixed on motor mounting panel 12.
Preferably, the electromagnets 8 are axially arranged on one side of the double-head motor 1 in parallel, and the separation bracket 10 is hinged on the motor mounting plate 12.
The driving structure for adjusting the forward sewing and backward sewing needle distance is as follows: the first swing crank 6 is connected with one end of a swing shaft 13, the other end of the swing shaft 13 drives a swing assembly to move through a second swing crank 14, and the swing assembly respectively drives the stitch length adjustment of the forward sewing and the backstitch when swinging in different directions.
The driving structure of the thread cutting action is as follows: the first ball 3 corresponds to the side face of the trimming swing crank 15, the first ball 3 drives the trimming swing crank 15 to rotate when the output shaft rotates at the trimming angle, the first ball 3 drives the trimming swing crank 15 to be in contact connection with the upper side face of the trimming swing crank 15, the trimming swing crank 15 is sleeved at one end of the trimming driving rod 16, and the other end of the trimming driving rod 16 drives the movable cutter assembly through the trimming crank 17. The movable cutter component comprises a movable cutter, and the thread cutting crank 17 drives the movable cutter to rotate and is matched with the fixed cutter to complete thread cutting.
The driving structure for the presser foot lifting action is as follows: the pressure foot lifting crank 5 is correspondingly provided with a pressure plate 18, the pressure foot lifting crank 5 is provided with a third ball, the third ball is in contact connection with the lower side surface of the pressure plate 18 when the pressure foot lifting crank 5 drives the pressure plate 18, the pressure plate 18 is rotatably arranged on the base through a fixed pin 19, a hinge point of the pressure plate 18 and the fixed pin 19 and a driving point of the pressure foot lifting crank 5 are respectively positioned at two ends of the pressure plate 18, the pressure foot lifting crank 5 drives the pressure plate 18 to rotate when an output shaft rotates at a pressure foot lifting angle, the pressure plate 18 corresponds to the lower end of a pressure foot ejector rod 20, the upper end of the pressure foot ejector rod 20 is connected with one end of a pressure foot connecting rod 21, the other end of the pressure foot connecting rod 21 is. The presser foot component comprises a presser foot, a presser foot rod and a drive plate, the pull rod 22 pulls the drive plate to rotate, and the presser foot rod ascends along with the pull rod to complete the action of lifting the presser foot.
Preferably, the double-headed motor 1 is a closed-loop motor, and the motor mounting plate 12 is fixed with an encoder 23.
The utility model discloses a work flow is:
thread trimming: when the output shaft of the double-head motor 1 rotates at the trimming angle, the presser foot lifting crank 5 does not touch the pressing plate 18 within the angle range, so that the action of the presser foot lifting is not touched; the valve core of the electromagnet 8 extends out, the lifting connecting rod 9 drives the separation support 10 to rotate around the hinged point, the front end of the separation support 10 downwards presses the driving connecting rod 4 to rotate around the hinged point, the second ball 7 is separated from the arc-shaped opening, and the driving disk 2 cannot drive the driving connecting rod 4 to move due to rotation. The first ball 3 drives the trimming swing crank 15 to rotate within the angle range, the trimming swing crank 15 drives the trimming driving rod 16 to rotate, and the trimming driving rod 16 further drives the movable cutter assembly to move through the trimming crank 16 to finish trimming.
A presser foot lifting action: when the output shaft of the double-head motor 1 rotates at the presser foot lifting angle, the ball I3 does not touch the trimming swing crank 15 in the angle range, so that the trimming action is not touched; the valve core of the electromagnet 8 extends out, the lifting connecting rod 9 drives the separation support 10 to rotate around the hinged point, the front end of the separation support 10 downwards presses the driving connecting rod 4 to rotate around the hinged point, the second ball 7 is separated from the arc-shaped opening, and the driving disk 2 cannot drive the driving connecting rod 4 to move due to rotation. The presser foot lifting crank 5 drives the pressing plate 18 to rotate around a hinge point, the presser foot ejector rod 20 is pushed to move upwards, the rotated presser foot ejector rod 20 drives the presser foot connecting rod 21 to rotate, the rotated presser foot connecting rod 21 pulls the pull rod 22, and the pull rod 22 pulls the presser foot assembly to complete the presser foot lifting action.
Adjusting the forward sewing and backward sewing stitch length: when the output shaft of the double-end motor 3 rotates between the angles of the stitch length adjustment of the forward sewing and the backward sewing, the ball I7 does not touch the trimming swing crank 15 in the angle range, so that the trimming action is not touched; the presser foot lifting crank 5 does not touch the pressure plate 18 in the angle range, so that the action of the presser foot lifting is not touched; the valve core of the electromagnet 8 retracts, the separation support 10 is driven to rotate around a hinge point through the lifting connecting rod 9, the front end of the separation support 10 moves upwards, meanwhile, the reset tension spring 11 drives the driving connecting rod 4 to rotate around the hinge point, so that the second ball 7 enters the arc-shaped opening, when the driving disc 2 rotates, the driving connecting rod 4 is driven to move through the second rolling 7, the driving connecting rod 4 drives the first swing crank 6 to rotate, the first swing crank 6 sequentially drives the swing assembly to rotate in different directions through the swing shaft 13 and the second swing crank 14, and the adjustment of the forward sewing needle distance and the adjustment of the backstitch needle distance are respectively completed.
The above-mentioned embodiment is only the preferred embodiment of the present invention, and does not limit the protection scope of the present invention according to this, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (8)
1. A single-motor flat car sewing machine comprises a machine head, a base, a thread trimming component, a presser foot lifting component and a forward sewing and backstitch needle distance adjusting component, and is characterized in that a double-head motor (1) is arranged in the base, a driving disc (2) is sleeved on an output shaft on one side of the double-head motor (1), a first ball (3) for driving the thread trimming component is arranged on the driving disc (2), the driving disc (2) is in clutch connection with a driving connecting rod (4) through a clutch device, and the driving connecting rod (4) is connected with the forward sewing and backstitch needle distance adjusting component; a pressure foot lifting crank (5) for driving the pressure foot lifting assembly is sleeved on an output shaft on the other side of the double-end motor (1); and an output shaft of the double-head motor (1) rotates at different angles to respectively drive the thread trimming assembly, the presser foot lifting assembly and the forward sewing and backstitch stitch length adjusting assembly to act.
2. The single-motor flat car sewing machine according to claim 1, characterized in that the middle of the driving connecting rod (4) is hinged to the first swing crank (6), the first swing crank (6) is driven to rotate when the driving connecting rod (4) is connected with the driving disc (2), one side of a hinge point of the driving connecting rod (4) is provided with a second ball (7), the other side of the hinge point is connected with a clutch device, and the driving disc (2) is provided with an arc-shaped opening matched with the second ball (7).
3. The single-motor flat car sewing machine according to claim 2, characterized in that the clutch device comprises an electromagnet (8), a valve core of the electromagnet (8) is hinged with one end of a lifting connecting rod (9), the other end of the lifting connecting rod (9) is hinged with one end of a separating bracket (10), the middle part of the separating bracket (10) is hinged and fixed, the lower side surface of the other end is in contact connection with one end of a driving connecting rod (4), and the other end of the driving connecting rod (4) is connected with a reset tension spring (11).
4. The single-motor flat car sewing machine according to claim 3, characterized in that the double-headed motor (1) is fixed on the base by a motor mounting plate (12), the electromagnets (8) are axially arranged in parallel on one side of the double-headed motor (1), and the separation bracket (10) is hinged on the motor mounting plate (12).
5. The single-motor flat car sewing machine of claim 2, wherein the first swing crank (6) is connected with one end of the swing shaft (13), and the other end of the swing shaft (13) drives the swing assembly to move through the second swing crank (14).
6. The single-motor flat car sewing machine according to claim 1, wherein the first ball (3) corresponds to a side surface of the trimming swing crank (15), the first ball (3) drives the trimming swing crank (15) to rotate when the output shaft rotates at the trimming angle, the trimming swing crank (15) is sleeved at one end of the trimming drive rod (16), and the other end of the trimming drive rod (16) drives the movable knife assembly through the trimming crank (17).
7. The single-motor flat car sewing machine according to claim 1, wherein the presser foot lifting crank (5) is correspondingly provided with a pressing plate (18), the pressing plate (18) is rotatably arranged on the base through a fixing pin (19), the presser foot lifting crank (5) drives the pressing plate (18) to rotate when the output shaft rotates in a presser foot lifting angle, the pressing plate (18) corresponds to the lower end of a presser foot ejector rod (20), the upper end of the presser foot ejector rod (20) is connected with one end of a presser foot connecting rod (21), the other end of the presser foot connecting rod (21) is connected with one end of a pull rod (22), and the other end of the pull rod (22) is connected with the presser foot assembly.
8. Single motor flatcar sewing machine according to claim 4, characterized in that the double-headed motor (1) is a closed-loop motor, and the motor mounting plate (12) is fixed with an encoder (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022600102.0U CN213624654U (en) | 2020-11-11 | 2020-11-11 | Single-motor flat car sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022600102.0U CN213624654U (en) | 2020-11-11 | 2020-11-11 | Single-motor flat car sewing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213624654U true CN213624654U (en) | 2021-07-06 |
Family
ID=76632346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022600102.0U Expired - Fee Related CN213624654U (en) | 2020-11-11 | 2020-11-11 | Single-motor flat car sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213624654U (en) |
-
2020
- 2020-11-11 CN CN202022600102.0U patent/CN213624654U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210706 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |